Benchmark: jquery level selector

HTML Preparation code:

<div id="test">
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
 <div class="level1"><div class="level2"></div></div>
</div>

Tests:

children .level1
$('#test').children('.level1');
find > .level1
$('#test').find('> .level1');
find .level1
$('#test').find('.level1');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
children .level1
find > .level1
find .level1

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36

Browser/OS: Chrome 53 on Windows 7

View result in a separate tab

Test name	Executions per second
children .level1	97902.7 Ops/sec
find > .level1	93387.4 Ops/sec
find .level1	241129.7 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):

LLMs can make mistakes. Check important info.

**What is being tested?**

The provided JSON represents a benchmark test case for measuring the performance of selecting HTML elements using jQuery. Specifically, it tests three different approaches:

1. `children('.level1')`: selects all direct children of the `.test` element that contain an element with class `level1`.
2. `find('> .level1')`: finds all descendants of the `.test` element that contain an element with class `level1`, starting from the first child.
3. `find('.level1')`: finds all elements within the `.test` element that have a class of `level1`.

**Options comparison**

The three options are compared to determine which one is the most efficient.

Pros and cons:

* `children('.level1')`:
	+ Pros: Directly selects only direct children, which may be faster.
	+ Cons: May not find all descendants, potentially missing elements with class `level1`.
* `find('> .level1')`: 
	+ Pros: Finds all descendants starting from the first child, which may ensure completeness. However, it uses the `.find()` method on a jQuery object, which might introduce overhead.
	+ Cons: May be slower due to the additional overhead of the `.find()` method.
* `find('.level1')`: 
	+ Pros: Finds all elements with class `level1` within the `.test` element, ensuring completeness. However, it may still use the `.find()` method on a jQuery object.
	+ Cons: May be slower than the other two options due to the additional overhead.

**Library usage**

The benchmark uses the jQuery library, which is a popular JavaScript library for DOM manipulation and event handling. The `children()`, `find()`, and `find()` methods are part of the jQuery API, allowing developers to easily select and manipulate HTML elements in the document.

**Special JS features or syntax**

None mentioned explicitly.

**Alternative approaches**

Other alternatives to test similar scenarios might include:

* Using plain JavaScript `DOM` APIs (e.g., `getElementsByClassName()`, `querySelectorAll()`) instead of jQuery's methods.
* Testing with a different DOM structure, such as using nested elements or attributes instead of classes for selection.
* Adding more complex selection patterns or filters to test the performance of these methods in those cases.

Related benchmarks:

jquery level selector (version: 0)

Comparing performance of: children .level1 vs find > .level1 vs find .level1

Created: 8 years ago by: Guest

Jump to the latest result

children .level1

find > .level1

find .level1

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):